17 december 2019

Introduction

NACE codes

Classify economic activities: NACE

"Nomenclature statistique des Activités économiques dans la Communauté Européenne"

The NACE is a hierarchical classification and contains four-digit codes

NACE codes

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General Business Register (GBR)

47.2.4 - Retail sale of bread, cakes, flour confectionery

96.0.2 - Hairdressing

NACE codes

  • Incorrect code appointed during registration
  • Structure of an enterprise changes over time
  • Changes in the activity of an interprise

NACE codes

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Manual checks are costly and time-consuming…

Previous research

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Current research

So we decided to turn things around…

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Current research

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Current research

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Current research

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Current research

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  1. Predicted label
  2. Observed label
  3. Agreement
  4. Probability of an error based on enterprise characteristics

Testing the method: experiments

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  • Percentage of errors
  • Subtle / obvious errors
  • Size of the labeled set
  • Relating enterprise characteristics to probability of an error

Results…

Questions?